Fixed bad continuation

Author: evaherrada

adafruit_ads1x15/analog_in.py

@@ -71,7 +71,8 @@ def __init__(self, ads, positive_pin, negative_pin=None):
     def value(self):
         """Returns the value of an ADC pin as an integer."""
         return self._ads.read(self._pin_setting, 
-            is_differential=self.is_differential) << (16 - self._ads.bits)
+                              is_differential=self.is_differential) <<
+                              (16 - self._ads.bits)
 
     @property
     def voltage(self):